Lines Matching full:metadata
27 internally for storing metadata and performing reclaim operations.
40 metadata. It can also use a regular block device together with the zoned
48 1) Metadata zones: these are conventional zones used to store metadata.
49 Metadata zones are not reported as usable capacity to the user.
60 device being used. This allows reducing the amount of metadata needed to
63 The on-disk metadata format is as follows:
66 super block which describes the on disk amount and position of metadata
114 Metadata Protection
117 To protect metadata against corruption in case of sudden power loss or
118 system crash, 2 sets of metadata zones are used. One set, the primary
119 set, is used as the main metadata region, while the secondary set is
120 used as a staging area. Modified metadata is first written to the
123 newest metadata. Once this operation completes, in place of metadata
124 block updates can be done in the primary metadata set. This ensures that
127 a flush request, metadata modification activity is temporarily blocked
129 metadata blocks are staged and updated. Normal operation is then
130 resumed. Flushing metadata thus only temporarily delays write and
132 metadata flush is being executed.
135 a third set of metadata (without the zone bitmaps) is written to the
136 start of the zoned block device. This metadata has a generation counter of
138 identification purposes. The first and second copy of the metadata
146 metadata sets on the device and initialize the metadata sets.